In trapezoid EFGH, EF⎯⎯⎯⎯⎯ and HG⎯⎯⎯⎯⎯⎯ are the bases. Point J is the midpoint of EH⎯⎯⎯⎯⎯⎯ and point K is the midpoint of FG⎯⎯⎯⎯⎯ . EF=5x+3 , HG=12x−3 , and JK=34 . What is the value of x?

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The table above shows approximate conversions from gallons to liters. what is the value of x?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?